杭州湾北岸金山咀—龙泉港岸段近岸滩槽冲淤演变分析

冯凌旋; 季永兴; 章馨谣; 戴志军

doi:10.3969/j.issn.1001-909X.2020.03.010

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海洋学研究 ›› 2020, Vol. 38 ›› Issue (3) : 92-98. DOI: 10.3969/j.issn.1001-909X.2020.03.010

研究报道

杭州湾北岸金山咀—龙泉港岸段近岸滩槽冲淤演变分析

冯凌旋¹, 季永兴¹, 章馨谣², 戴志军^*2

作者信息 +

Analysis of erosion and deposition evolution of inshore shoals and channels along the Jinshanzui to Longquangang segment in the northern Hangzhou Bay

FENG Lingxuan¹, JI Yongxing¹, ZHANG Xinyao², DAI Zhijun^*2

Author information +

文章历史 +

摘要

以杭州湾北岸金山咀—龙泉港岸段边滩及海床为研究区域,利用1989—2014年实测及海图资料分析岸滩断面地形变化和岸段冲淤变化。结果表明:在该研究时段,岸段存在长期稳定的冲刷深槽;近岸海床的冲淤表现出“波动性”,5 m等深线(2014年)以浅区以淤积为主,5 m等深线以深冲淤更迭,1989年以来总体呈现冲刷态势。长江入海泥沙量变化为该岸段发生侵蚀/淤积的影响因子之一,台风大浪及海床侵蚀/淤积波的移动导致海床冲淤复杂化。

Abstract

Taking Jinshanzui-Longquangang marginal shoal in the northern Hangzhou Bay as the study area, based on the measured and chart data from 1989 to 2014, we analyzed the topographic change of beach section and the variation characteristics of erosion and deposition of regional beach section along the Jinshanzui to Longquangang(JSZ-LQG) segment. The results showed that during study period there was relative stable eroded deepen channel in the study area, and the scouring and silting of the nearshore seabed showed a "fluctuating" law. The shallow area above 5 m water depth(2014) presented accreted patterns, meanwhile, seabed below 5 m water depth(2014) showed a general scouring trend since 1989. Moreover, variation of sediment discharge into the Yangtze River is an influencing factor of erosion/deposition in the study area. The typhoon waves, movement of the erosion and accretion sand body induced complexity in erosion and accretion in seabed of the JSZ-LQG segment.

导出引用

冯凌旋, 季永兴, 章馨谣, 戴志军. 杭州湾北岸金山咀—龙泉港岸段近岸滩槽冲淤演变分析[J]. 海洋学研究. 2020, 38(3): 92-98 https://doi.org/10.3969/j.issn.1001-909X.2020.03.010

FENG Lingxuan, JI Yongxing, ZHANG Xinyao, DAI Zhijun. Analysis of erosion and deposition evolution of inshore shoals and channels along the Jinshanzui to Longquangang segment in the northern Hangzhou Bay[J]. Journal of Marine Sciences. 2020, 38(3): 92-98 https://doi.org/10.3969/j.issn.1001-909X.2020.03.010

中图分类号： TV148

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